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Her speciality is heart surgery.
A:region
B:site
C:field
D:platform

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相关试题
We had only a vague description of the attacker.
A:concise
B:imprecise
C:unpolished
D:elementary
A peculiarly pointed chin is his most memorable facial characteristic.
A:mark
B:feature
C:trace
D:appearance
共用题干
Eastern Quakes can Trigger Big Shakes
In the first week of November 2011,people in central Oklahoma experienced more than two dozen earth-
quakes.The largest,a magnitude(量)5.6 quake,shook thousands of fans in a college football stadium,
caused cracks in a few buildings and scared many people who had never felt a quake before.Oklahoma is not
an area of the country famous for its quakes.If you watch the news on TV,you will see reports about all sorts
of natural disasters.But the most dangerous type of natural disaster,and also the most unpredictable,is the
earthquake.
Researchers at the US Geological Survey(USGS)estimate that several million earthquakes occur globally
each year. That may sound scary,but people don't feel many of them because they happen in remote and
unpopulated regions.Many quakes happen under the ocean,and others have a very small magnitude.
Scientists know about small,remote quakes only because of very sensitive electronic devices called seis-
mometers(地震仪).These devices detect and measure the size of ground vibrations(震颤)produced by
earthquakes.Altogether,USGS researchers use seismometers to identify and locate about 20,000 earthquakes
each year.
Although earthquakes can happen anywhere in the world,really big quakes occur only in certain areas.
The largest ones register a magnitude 8 or higher and happen,on average,only once each year. Such big
ones typically occur along the edges of Earth ' s tectonic plates(构造板块).
Tectonic plates are huge pieces of Earth ' s crust(外壳),sometimes many kilometers thick. Often,
edges of these plates temporarily lock together. When plates push and scrape(擦)past each other earthquakes
occur. On average,tectonic plates move very slowly一about the same speed as your fingernails grow.
But sometimes earthquakes rumble(轰轰作响)through portions of the landscape far from a plate ' s
edges.Although less expected,these"mid-plate"small earthquakes can do substantial damage.Some of the
biggest known examples hit the eastern half of the United States two centuries ago.Today,scientists are still
puzzling over why the quakes occurred and when similar ones might occur.
The earthquake is the most unpredictable natural disaster.
A:Right
B:Wrong
C:Not mentioned
共用题干
Climate Change Poses Major Risks for Unprepared Cities
A new examination of urban policies has been carried out recently by Patricia Romero Lankao. She is a so-
ciologist specializing in climate change and_____________(51) development. She warns that many of the world'5
fast-growing urban areas,especially in developing countries,will likely suffer from the_____________(52)of
changing climate. Her work also concludes that most cities are failing to_____________(53)emissions of carbon
dioxide and other greenhouse gases. These gases are known to affect the atmosphere.
"Climate change is a deeply local issue and poses profound_____________ (54) to the growing cities of the
world,"says Romero Lankao. "But too few cities are developing effective strategies to protect their residents."
Cities are_____________(55)sources of greenhouse gases.And urban populations are likely to be among
those most severely affected by future climate change.Lankao's findings highlight ways in which city-resi-
dents are particularly vulnerable,and suggest policy interventions that could offer immediate and longer-term
____________ (56).
The locations and dense construction patterns of cities often place their populations at greater
_____________(57)for natural disasters.Potential threats associated with climate include storm surges and pro-
longed hot weather. Storm surges can flood coastal areas and prolonged hot weather can heat_____________(58)
paved cities more than surrounding areas. The impacts of such natural events can be more_____________(59)in
an urban environment. For example,a prolonged heat wave can increase existing levels of air pollution,causing
widespread health problems.Poorer neighborhoods that may_____________(60)basic facilities such as drinking
water or a dependable network of roads,are especially vulnerable to natural disasters.Many residents in
poorer countries live in substandard housing_____________(61)access to reliable drinking water,roads and
basic services.
Local governments,therefore,should take measures to_____________(62)their residents."Unfortunately,
they tend to move towards rhetoric_____________(63)meaningful responses,"Romero Lankao writes,"They don't
impose construction standards that could reduce heating and air conditioning_____________(64).They don't em-
phasize mass transit and reduce automobile use.In fact,many local governments are taking a hands-off ap-
proach."_____________(65),she urges them to change their idle policies and to take strong steps to prevent
the harmful effects of climate change on cities.
_________(54)
A:threats
B:interests
C:implications
D:differences
_____
  
A.For example, the people in men's dreams are often other men, and the dreams often involve fighting.
  B.Men and women dream about different things.
  C.A criminal, for example, might dream about crime.
  D.However, one thing they agree on this: If you dream that something terrible is going to occur, you shouldn't panic.
  E.It was only in the twentieth century that people started to study dreams in a scientific way.
  F.He thought people could learn more about themselves by thinking about their dreams.
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